Always return exit code of 0, even if there are errors

Author: stevepiercy

.github/workflows/test.yml

@@ -28,4 +28,4 @@ jobs:
           cp -r ./Microsoft/Microsoft ./styles
           make test
           VALEFILES=$(find -L ./docs/ -type d \( -path "./docs/plone.restapi/lib/*" -o -path "./docs/plone.restapi/performance/*" \) -prune -false -o -type f -name "*.md" -print)
-          make vale $VALEFILES
+          make vale $VALEFILES --no-exit